CN213235462U - Novel front bulb type tubular pump device - Google Patents
Novel front bulb type tubular pump device Download PDFInfo
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- CN213235462U CN213235462U CN202022219914.0U CN202022219914U CN213235462U CN 213235462 U CN213235462 U CN 213235462U CN 202022219914 U CN202022219914 U CN 202022219914U CN 213235462 U CN213235462 U CN 213235462U
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Abstract
A novel front bulb type tubular pump device belongs to the technical field of hydraulic engineering pump stations and sequentially comprises a water inlet flow passage, a water pump impeller, a water pump rear guide vane body and a water outlet flow passage; the shape of the cross section of the water inlet flow passage is gradually changed from a rectangle to a circle, and the shape of the cross section of the water outlet flow passage is gradually changed from a circle to a rectangle; arranging a bulb body in the water inlet flow passage, wherein the bulb body is connected with the water inlet flow passage through a supporting structure; the outer wall of the circular platform section of the bulb body is smoothly connected with the water pump impeller hub body; and a shaft seal is arranged at the shaft extension part of the round platform section of the bulb body, which is connected with the water pump impeller. The utility model discloses it is internal to move to the bulb in the wheel hub of the guide vane body with leading bulb formula tubular pump device's water pump guide bearing, can effectively subtract the pump shaft length of leading bulb formula tubular pump device to change the water pump guide bearing into the dry-type by the wet-type, when keeping leading bulb formula tubular pump device hydraulic performance excellent, greatly improved the stability of shafting and the reliability of guide bearing.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering pump station, concretely relates to novel leading bulb formula tubular pump device, mainly used super large flow low-lift pump station.
Background
The demand of the super-huge low-lift tubular pump device applied to the fields of water resource allocation, flood control and drainage, water environment improvement and the like in plain areas is continuously increased in the face of the situation that the global climate is gradually warmed up and the national economy of China is rapidly developed. The front bulb type tubular pump device is one of the main large tubular pump devices, the bulb body of the front bulb type tubular pump device is of a large closed metal thin shell structure, and a driving motor of a water pump is arranged in the bulb body. The bulb body of the front bulb type pump device is arranged in the water inlet flow channel, the guide vane body is positioned between the water pump impeller chamber and the water outlet flow channel, and the water pump guide bearing is arranged in the guide vane body. The arrangement structure has the defects of large pump shaft length and wet guide bearing, seriously influences the stability of a unit shafting and the reliability of the guide bearing, and greatly limits the application of the front bulb type tubular pump device in a pump station with extra-large flow and low lift.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model discloses creatively with the water pump guide bearing of novel leading bulb formula tubular pump device from the wheel hub internal migration of guide vane body to the bulb internal, provided a novel leading bulb formula tubular pump device, can effectively subtract the pump shaft length of short leading bulb formula tubular pump device, change the water pump guide bearing by the wet-type dry-type simultaneously, when keeping leading bulb formula tubular pump device hydraulic performance excellent, greatly improved the stability of shafting and guide bearing's reliability.
The utility model is characterized in that: the front bulb type tubular pump device consists of a water inlet flow channel, a water pump impeller, a water pump rear guide vane body and a water outlet flow channel in sequence; arranging a bulb body in the water inlet flow passage, wherein the bulb body is connected with the water inlet flow passage through a supporting structure; the outer wall of the circular truncated cone section of the bulb body is smoothly connected with the water pump impeller hub body; a shaft seal is arranged at a shaft extension part of the bulb body circular platform section connected with the water pump impeller, a guide bearing seat and a guide bearing are arranged near the shaft seal, and the guide bearing is positioned in the guide bearing seat; the guide bearing seat and the water pump impeller are respectively positioned at two sides of the shaft seal; a space is reserved between the guide bearing seat and the shaft seal, and the leakage water entering from the shaft seal can be discharged out of the bulb body from the drainage pipe through the space reserved between the guide bearing seat and the shaft seal; and a support is arranged between the outer wall of the circular platform section of the bulb body and the inner wall of the water inlet flow channel corresponding to the position of the bearing guide seat. The utility model discloses think about ingenious, novel structure, can effectively overcome leading bulb-type tubular pump device's shortcoming, fundamentally has guaranteed the stability of leading bulb-type tubular pump device operation.
In order to realize the purpose of the utility model, a novel leading bulb formula tubular pump device adopts following technical scheme:
(1) the novel front bulb type tubular pump device consists of a water inlet flow channel, a water pump impeller, a water pump rear guide vane body and a water outlet flow channel in sequence; the shape of the cross section of the water inlet runner is gradually changed from a rectangle to a circle, and the shape of the cross section of the water outlet runner is gradually changed from a circle to a rectangle;
(2) a bulb body is arranged in the water inlet flow passage and is stably connected with the water inlet flow passage through a supporting structure so as to keep the stability of the bulb body when the water pump operates; the outer wall of the circular platform section of the bulb body is smoothly connected with the outer wall of the hub body of the water pump impeller, so that water flow smoothly and uniformly enters the water pump impeller;
(3) a shaft seal is arranged at a shaft extension part of the bulb body circular platform section connected with the water pump impeller, a guide bearing seat and a guide bearing are arranged near the shaft seal, and the guide bearing is positioned in the guide bearing seat; the guide bearing seat and the water pump impeller are respectively positioned at two sides of the shaft seal; a space is reserved between the guide bearing seat and the shaft seal, and the leakage water entering from the shaft seal can be discharged out of the bulb body through the water discharge pipe so as to ensure that the leakage water cannot enter the guide bearing;
(4) and a support is arranged between the outer wall of the circular truncated cone section of the bulb body and the inner wall of the water inlet flow channel and corresponds to the guide bearing seat, so that the working stability of the guide bearing is kept.
The utility model discloses creatively with leading bulb formula tubular pump device's water pump guide bearing from the guide vane body wheel hub internal shift to the bulb, have following beneficial effect:
first, the utility model discloses can subtract the transmission shaft length of leading bulb formula tubular pump device by a wide margin, show the shafting stability that improves pump unit.
Second, the utility model discloses lead the bearing to change the wet-type that arranges originally in the stator body behind the water pump into and arrange the dry-type that leads in the bulb body and lead the bearing, fundamentally has changed the operational environment who leads the bearing, ensures to lead the bearing and can not receive the influence of bearing seal percolating water, has greatly improved the reliability of leading the bearing.
Third, the utility model discloses a water pump guide vane body no longer undertakes the task of supporting the guide bearing, consequently can adopt overall structure and no longer must adopt and open the structure because of the needs that the guide bearing overhauld, the blade number of the guide vane body just can adopt the odd number piece number, has avoided opening the problem that the blade number of the guide vane body had to adopt the even number to lead to because of the guide vane body needs.
Fourth, the utility model discloses both remain the excellent advantage of current leading bulb-type tubular pump device hydraulic performance, show the stability and the reliability that have improved pump unit simultaneously again, created one kind and had excellent hydraulic performance and high safe and stable reliable's especially big tubular pump device simultaneously.
Drawings
FIG. 1 is a schematic view of the front bulb-type tubular pump assembly of the present invention in elevation;
FIG. 2 is a schematic plan view of a front bulb type tubular pump device according to the present invention;
in the figure, a water inlet flow passage 1, a water pump impeller 2, a water pump rear guide vane body 3, a water outlet flow passage 4, a bulb body 5, a support structure 6, a hub body 7, a shaft seal 8, a guide bearing seat 9, a guide bearing 10, a support 11 and a circular platform section 12 are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
(1) The novel front bulb type tubular pump device sequentially comprises a water inlet flow passage 1, a water pump impeller 2, a water pump rear guide vane body 3 and a water outlet flow passage 4; the section shape of the water inlet flow passage 1 is gradually changed from a rectangle to a circle, and the section shape of the water outlet flow passage 4 is gradually changed from a circle to a rectangle;
(2) a bulb body 5 is arranged in the water inlet flow passage 1, and the bulb body 5 is stably connected with the water inlet flow passage 1 through a support structure 6; the outer wall of the circular truncated cone section 12 of the bulb body 5 is smoothly connected with the outer wall of the hub body 7 of the water pump impeller 2;
(3) a shaft seal 8 is arranged at a shaft extension part where a circular truncated cone section 12 of the bulb body 5 is connected with the water pump impeller 2, a guide bearing seat 9 and a guide bearing 10 are arranged near the shaft seal 8, and the guide bearing 10 is positioned in the guide bearing seat 9; the guide bearing seat 9 and the water pump impeller 2 are respectively positioned at two sides of the shaft seal 8; a gap is reserved between the bearing guide seat 9 and the shaft seal 8, and the leakage water entering from the shaft seal 8 can be discharged out of the bulb body 5 from the water discharge pipe through the gap reserved between the bearing guide seat and the shaft seal;
(4) a support 11 is arranged between the outer wall of the circular truncated cone section 12 of the bulb 5 and the inner wall of the water inlet channel 1, in a position corresponding to the guide bearing seat 9.
Claims (5)
1. A novel front bulb type tubular pump device is characterized in that the front bulb type tubular pump device sequentially comprises a water inlet flow channel, a water pump impeller, a water pump rear guide vane body and a water outlet flow channel; the shape of the cross section of the water inlet runner is gradually changed from a rectangle to a circle, and the shape of the cross section of the water outlet runner is gradually changed from a circle to a rectangle; arranging a bulb body in the water inlet flow passage, wherein the bulb body is connected with the water inlet flow passage through a supporting structure; the outer wall of the circular platform section of the bulb body is smoothly connected with the water pump impeller hub body; and a shaft seal is arranged at the shaft extension part of the round platform section of the bulb body, which is connected with the water pump impeller.
2. The novel front bulb-type tubular pump device as claimed in claim 1, wherein a guide bearing seat and a guide bearing are arranged near the shaft seal, and the guide bearing is positioned in the guide bearing seat; the guide bearing seat and the water pump impeller are respectively positioned on two sides of the shaft seal.
3. The new front bulb-type tubular pump device as set forth in claim 2, wherein a space is left between the guide bearing seat and the shaft seal.
4. The new front bulb-type tubular pump device as recited in claim 3, wherein a drain is provided in the bulb body, and the leakage water from the shaft seal is discharged from the drain through a gap between the bearing seat and the shaft seal.
5. The novel front bulb type tubular pump device as claimed in claim 4, wherein a support is arranged between the outer wall of the circular truncated cone section of the bulb body and the inner wall of the water inlet flow channel, corresponding to the position of the bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219914.0U CN213235462U (en) | 2020-09-30 | 2020-09-30 | Novel front bulb type tubular pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219914.0U CN213235462U (en) | 2020-09-30 | 2020-09-30 | Novel front bulb type tubular pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213235462U true CN213235462U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022219914.0U Active CN213235462U (en) | 2020-09-30 | 2020-09-30 | Novel front bulb type tubular pump device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909300A (en) * | 2022-04-12 | 2022-08-16 | 江苏大学流体机械温岭研究院 | Fish passing device of through-flow pump station |
| CN115076123A (en) * | 2022-06-23 | 2022-09-20 | 江苏大学 | Eco-friendly tubular pump |
-
2020
- 2020-09-30 CN CN202022219914.0U patent/CN213235462U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909300A (en) * | 2022-04-12 | 2022-08-16 | 江苏大学流体机械温岭研究院 | Fish passing device of through-flow pump station |
| CN115076123A (en) * | 2022-06-23 | 2022-09-20 | 江苏大学 | Eco-friendly tubular pump |
| CN115076123B (en) * | 2022-06-23 | 2024-04-09 | 江苏大学 | Eco-friendly tubular pump |
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